Venture funding continues to pour into transformative technologies as three standout startups secure nearly $80 million combined.
An Israeli pioneer in subsea data protection emerges from stealth with $26 million, a San Francisco-based AI memory platform raises $24 million to eliminate digital forgetfulness, and a Seattle healthcare innovator closes $28 million to expand AI-driven remote patient care. These rounds highlight investor appetite for solutions addressing urgent vulnerabilities in data security, intelligent systems, and accessible medicine.
CyberRidge Emerges from Stealth to Secure Subsea Cables
CyberRidge, a Tel Aviv-based deep-tech cybersecurity firm, has raised a total of $26 million to deploy photonic encryption that renders intercepted data unrecoverable. Founded by Professor Dan Sadot, the company targets the backbone of global communications: fiber-optic cables carrying over 95% of international data traffic, including subsea lines vulnerable to state-sponsored tapping. Traditional encryption assumes data theft will occur, relying on mathematical barriers that quantum computers could soon shatter. CyberRidge takes a radical approach by transforming transmissions into optical noise at the point of transmission. Hardware boxes installed at cable endpoints scramble light signals using proprietary photonic keys that shift every fraction of a second, ensuring any tapped data appears as meaningless static. This layer complements existing protections and integrates seamlessly into current infrastructure. The funding breaks down to a $10 million seed led by Awz Ventures, plus a $16 million extension from Arkin Capital, Redseed VC, Elron Ventures, and the EU Horizon-EIC program. Early deployments span telecommunications, defense agencies in Europe, Singapore, Australia, and Israel's military intelligence unit. With 30 employees across three continents, CyberRidge plans full production by early 2026, positioning itself against rising threats like harvest-now-decrypt-later attacks.
Mem0 Builds Persistent Memory for the Agentic AI Era
Mem0, a Y Combinator-backed platform revolutionizing AI agent infrastructure, has secured $24 million across seed and Series A rounds to create a universal memory layer for large language models. Launched in early 2024 by serial entrepreneur Taranjeet Singh, the San Francisco startup solves AI's core limitation: stateless interactions that force users to repeat context endlessly. Mem0 acts as a self-improving database, storing, updating, and retrieving user-specific details across sessions, models, and applications with just three lines of code. Developers integrate it into frameworks like LangChain, LlamaIndex, CrewAI, and Flowise, enabling therapy bots to recall emotions, productivity tools to track habits, and companions to evolve personalities. Traction exploded with 41,000 GitHub stars, 14 million downloads, and API calls surging from 35 million in Q1 to 186 million in Q3 2025. Over 80,000 developers use the cloud service, serving startups to Fortune 500 firms, with AWS selecting it as the exclusive memory provider for its Agent SDK. The seed round came from Kindred Ventures, while Basis Set Ventures led the Series A, joined by Peak XV Partners, GitHub Fund, and angels like HubSpot's Dharmesh Shah. Funds will scale engineering to dominate as the default backend for agentic AI, where memory becomes as essential as databases in traditional apps.
Brook.ai Scales AI-Powered Remote Care Nationwide
Brook.ai, a Seattle health tech leader, has closed a $28 million Series B to propel its hybrid human-AI platform for continuous home-based patient monitoring and support. Co-founded by Oren Nissim, who previously sold mapping firm Telmap to Intel, the company originally focused on diabetes management before expanding to hypertension, metabolic health, and chronic diseases. Its turnkey system deploys in 30 days, blending remote clinicians—nurses, dietitians, coaches—with an AI assistant trained on millions of patient interactions. This always-on model collects data from wearables, delivers proactive nudges, and prevents escalations, slashing congestive heart failure readmissions by 90% and boosting hypertension control by 80% in weeks. Patient growth hit 204% last year with 82% retention, aligning with a remote care market projected to triple to $219 billion by 2030. UMass Memorial Health led the round alongside Morningside, drawn by proven outcomes in population health. The capital accelerates national rollout amid shifting reimbursements favoring home care, allowing providers to extend reach without added workload while payers cut admissions costs.
A Trifecta of Breakthroughs Amid Surging AI and Security Demand
These infusions—$78 million total—underscore converging priorities: bulletproofing data flows against quantum realities, endowing AI with human-like recall, and humanizing healthcare through intelligent augmentation. Investors from Awz to Basis Set recognize startups fortifying digital infrastructure's weakest links. As AI agents proliferate and global data volumes explode, solutions like photonic invisibility, portable memory passports, and seamless remote care promise not just survival, but dominance in a hyper-connected future. The pace signals 2025 as a pivotal year for infrastructure plays redefining security, intelligence, and wellness.